Frequencies for first 10,000 rows of lab_srvc_cd variable in pos2016 dataset :

  Services: |
 Laboratory |
       Code |      Freq.     Percent        Cum.
------------+-----------------------------------
          . |      8,542       85.42       85.42
          0 |        949        9.49       94.91
          1 |         60        0.60       95.51
          2 |        386        3.86       99.37
          3 |         63        0.63      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 10 Jan 2017